2 * Copyright 2009 Freescale Semiconductor, Inc.
4 * See file CREDITS for list of people who contributed to this
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License as
9 * published by the Free Software Foundation; either version 2 of
10 * the License, or (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
24 #include <asm/processor.h>
25 #include <asm/global_data.h>
26 #include <asm/fsl_ifc.h>
29 DECLARE_GLOBAL_DATA_PTR;
33 #ifdef CONFIG_SYS_INIT_L2_ADDR
34 ccsr_l2cache_t *l2cache = (void *)CONFIG_SYS_MPC85xx_L2_ADDR;
36 out_be32(&l2cache->l2srbar0, CONFIG_SYS_INIT_L2_ADDR);
38 /* set MBECCDIS=1, SBECCDIS=1 */
39 out_be32(&l2cache->l2errdis,
40 (MPC85xx_L2ERRDIS_MBECC | MPC85xx_L2ERRDIS_SBECC));
42 /* set L2E=1 & L2SRAM=001 */
43 out_be32(&l2cache->l2ctl,
44 (MPC85xx_L2CTL_L2E | MPC85xx_L2CTL_L2SRAM_ENTIRE));
48 #ifndef CONFIG_SYS_FSL_TBCLK_DIV
49 #define CONFIG_SYS_FSL_TBCLK_DIV 8
52 void udelay(unsigned long usec)
54 u32 ticks_per_usec = gd->bus_clk / (CONFIG_SYS_FSL_TBCLK_DIV * 1000000);
55 u32 ticks = ticks_per_usec * usec;
56 u32 s = mfspr(SPRN_TBRL);
58 while ((mfspr(SPRN_TBRL) - s) < ticks);